Z51 Brake Upgrade Kit
07-10-2008, 09:42 PM
#1
Melting Slicks
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Z51 Brake Upgrade Kit
Im looking to get the Z51 Brake Kit for my standard C6 and i found this
http://forums.corvetteforum.com/show....php?t=2068647
Im wondering is this all i will need ?
dont they use bigger calipers ?
thanks.
||--Z51 Brake Upgrade Kit--||
89060328 (2) – Front Brake Rotors
89060329 (2) – Rear Brake Rotors
88964166 (2) – Front Brake Caliper Bracket
88964167 (2) – Rear Brake Caliper Bracket
Total kit with all 4 rotors and caliper brackets 531.96 shipped
For this kit on our website, use part number c6z51brakes under Chevrolet make.
http://forums.corvetteforum.com/show....php?t=2068647
Im wondering is this all i will need ?
dont they use bigger calipers ?
thanks.
||--Z51 Brake Upgrade Kit--||
89060328 (2) – Front Brake Rotors
89060329 (2) – Rear Brake Rotors
88964166 (2) – Front Brake Caliper Bracket
88964167 (2) – Rear Brake Caliper Bracket
Total kit with all 4 rotors and caliper brackets 531.96 shipped
For this kit on our website, use part number c6z51brakes under Chevrolet make.
i wonder as well now .
07-11-2008, 12:55 AM
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Melting Slicks
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07-11-2008, 04:53 AM
#11
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07-11-2008, 05:09 AM
#12
Melting Slicks
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07-11-2008, 05:14 AM
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the outside dimensions of your rear caliper and the Z51 caliper are identical. The difference is the Z51 has a 42mm piston, and yours has a 45. GM must have had a reason for changing them, but many people have upgraded with no problem. If you wanted a 'true' Z51 conversion, you would need to buy 2 new rear calipers, approx. 100 each from Gene.
07-11-2008, 08:09 AM
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St. Jude Donor '10
I just did the upgrade from Gene on July 4th. I have not had any issues. Really fills in the rims much better. I did not change the rear calipers out.
07-11-2008, 03:38 PM
#16
Team Owner
the outside dimensions of your rear caliper and the Z51 caliper are identical. The difference is the Z51 has a 42mm piston, and yours has a 45. GM must have had a reason for changing them, but many people have upgraded with no problem. If you wanted a 'true' Z51 conversion, you would need to buy 2 new rear calipers, approx. 100 each from Gene.
07-11-2008, 05:32 PM
#18
Get Some!
the outside dimensions of your rear caliper and the Z51 caliper are identical. The difference is the Z51 has a 42mm piston, and yours has a 45. GM must have had a reason for changing them, but many people have upgraded with no problem. If you wanted a 'true' Z51 conversion, you would need to buy 2 new rear calipers, approx. 100 each from Gene.
They did it for brake bias reasons, since the Z51 had larger rotors (i.e. more braking torque) and more aggressive pads they lowered the force in the rear a little.
07-11-2008, 07:19 PM
#19
Melting Slicks
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I thought a smaller piston gave increased force. ????????
Anyway, the difference is about 15%. Maybe the Z51 has a smaller piston because of less weight transfer during braking due to the stiffer front spring and shocks.
Anyway, the difference is about 15%. Maybe the Z51 has a smaller piston because of less weight transfer during braking due to the stiffer front spring and shocks.
Last edited by davekp78; 07-11-2008 at 07:28 PM.
